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* [Bug sim/29595] New: RISC-V simulator cannot run multiply instructions
@ 2022-09-22 4:13 research_trasio at irq dot a4lg.com
2022-09-22 4:14 ` [Bug sim/29595] " research_trasio at irq dot a4lg.com
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: research_trasio at irq dot a4lg.com @ 2022-09-22 4:13 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29595
Bug ID: 29595
Summary: RISC-V simulator cannot run multiply instructions
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: sim
Assignee: unassigned at sourceware dot org
Reporter: research_trasio at irq dot a4lg.com
CC: vapier at gentoo dot org
Target Milestone: ---
Created attachment 14343
--> https://sourceware.org/bugzilla/attachment.cgi?id=14343&action=edit
Reproduction source code + generated object files + simulator logs
[POSSIBLE RELEASE BLOCKER FOR GDB 13.1]
On the latest master, RISC-V simulator cannot run multiply instructions (but
CAN run division instructions).
I completely know the cause:
On the Binutils side, new multiply-only instruction subset extension 'Zmmul' is
being added. I sent a patchset which spans *both Binutils and GDB* but *only
Binutils part is committed.*
This is the one (same but both to binutils and gdb-patches ML):
<https://sourceware.org/pipermail/binutils/2022-August/122653.html>
<https://sourceware.org/pipermail/gdb-patches/2022-August/191295.html>
I'm proposing remaining part (GDB / simulator part) as a separate patchset but
there's no response from the GDB side...
<https://sourceware.org/pipermail/gdb-patches/2022-August/191609.html>
<https://sourceware.org/pipermail/gdb-patches/2022-September/191841.html> (ping
1)
<https://sourceware.org/pipermail/gdb-patches/2022-September/191995.html> (ping
2)
Not being able to run the multiply instructions on the simulator is clearly a
release blocker for GDB 13.1. So I'm reporting this to track this issue.
My copyright assignment to both Binutils and GDB is complete and I'm now even a
"write after approval" committer. If a maintainer gives me an approval, I can
commit it in a day.
GitHub tracker of me:
<https://github.com/a4lg/binutils-gdb/wiki/sim_riscv_zmmul>
<https://github.com/a4lg/binutils-gdb/wiki/riscv_zmmul>
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* [Bug sim/29595] RISC-V simulator cannot run multiply instructions
2022-09-22 4:13 [Bug sim/29595] New: RISC-V simulator cannot run multiply instructions research_trasio at irq dot a4lg.com
@ 2022-09-22 4:14 ` research_trasio at irq dot a4lg.com
2022-09-22 4:16 ` [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can division instructions) research_trasio at irq dot a4lg.com
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: research_trasio at irq dot a4lg.com @ 2022-09-22 4:14 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29595
Tsukasa OI <research_trasio at irq dot a4lg.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |riscv64-*
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* [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can division instructions)
2022-09-22 4:13 [Bug sim/29595] New: RISC-V simulator cannot run multiply instructions research_trasio at irq dot a4lg.com
2022-09-22 4:14 ` [Bug sim/29595] " research_trasio at irq dot a4lg.com
@ 2022-09-22 4:16 ` research_trasio at irq dot a4lg.com
2022-09-22 4:17 ` [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can run " research_trasio at irq dot a4lg.com
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: research_trasio at irq dot a4lg.com @ 2022-09-22 4:16 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29595
Tsukasa OI <research_trasio at irq dot a4lg.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|RISC-V simulator cannot run |RISC-V simulator cannot run
|multiply instructions |multiply instructions (but
| |can division instructions)
--- Comment #1 from Tsukasa OI <research_trasio at irq dot a4lg.com> ---
As far I know, Nelson approved the Binutils part (and committed the original
patchset) but he said he cannot approve the GDB part (since he's not a
maintainer).
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* [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can run division instructions)
2022-09-22 4:13 [Bug sim/29595] New: RISC-V simulator cannot run multiply instructions research_trasio at irq dot a4lg.com
2022-09-22 4:14 ` [Bug sim/29595] " research_trasio at irq dot a4lg.com
2022-09-22 4:16 ` [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can division instructions) research_trasio at irq dot a4lg.com
@ 2022-09-22 4:17 ` research_trasio at irq dot a4lg.com
2022-09-22 4:50 ` research_trasio at irq dot a4lg.com
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: research_trasio at irq dot a4lg.com @ 2022-09-22 4:17 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29595
Tsukasa OI <research_trasio at irq dot a4lg.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|RISC-V simulator cannot run |RISC-V simulator cannot run
|multiply instructions (but |multiply instructions (but
|can division instructions) |can run division
| |instructions)
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* [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can run division instructions)
2022-09-22 4:13 [Bug sim/29595] New: RISC-V simulator cannot run multiply instructions research_trasio at irq dot a4lg.com
` (2 preceding siblings ...)
2022-09-22 4:17 ` [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can run " research_trasio at irq dot a4lg.com
@ 2022-09-22 4:50 ` research_trasio at irq dot a4lg.com
2022-09-22 5:22 ` research_trasio at irq dot a4lg.com
2022-10-11 11:47 ` aburgess at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: research_trasio at irq dot a4lg.com @ 2022-09-22 4:50 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29595
Tsukasa OI <research_trasio at irq dot a4lg.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |research_trasio at irq dot a4lg.co
| |m
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* [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can run division instructions)
2022-09-22 4:13 [Bug sim/29595] New: RISC-V simulator cannot run multiply instructions research_trasio at irq dot a4lg.com
` (3 preceding siblings ...)
2022-09-22 4:50 ` research_trasio at irq dot a4lg.com
@ 2022-09-22 5:22 ` research_trasio at irq dot a4lg.com
2022-10-11 11:47 ` aburgess at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: research_trasio at irq dot a4lg.com @ 2022-09-22 5:22 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29595
Tsukasa OI <research_trasio at irq dot a4lg.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P2 |P1
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* [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can run division instructions)
2022-09-22 4:13 [Bug sim/29595] New: RISC-V simulator cannot run multiply instructions research_trasio at irq dot a4lg.com
` (4 preceding siblings ...)
2022-09-22 5:22 ` research_trasio at irq dot a4lg.com
@ 2022-10-11 11:47 ` aburgess at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: aburgess at redhat dot com @ 2022-10-11 11:47 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29595
Andrew Burgess <aburgess at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |aburgess at redhat dot com
Resolution|--- |FIXED
--- Comment #2 from Andrew Burgess <aburgess at redhat dot com> ---
I pushed the patch from Tsukasa OI for this issue, but forgot to add the bug
link into the commit message. Ooops.
This is the commit on upstream master branch:
commit c6422d7be70f14bf7140085f2fc7a592737f5df5
Author: Tsukasa OI <research_trasio@irq.a4lg.com>
Date: Wed Aug 31 01:46:08 2022 +0000
sim/riscv: fix multiply instructions on simulator
This issue should now be resolved.
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2022-09-22 4:13 [Bug sim/29595] New: RISC-V simulator cannot run multiply instructions research_trasio at irq dot a4lg.com
2022-09-22 4:14 ` [Bug sim/29595] " research_trasio at irq dot a4lg.com
2022-09-22 4:16 ` [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can division instructions) research_trasio at irq dot a4lg.com
2022-09-22 4:17 ` [Bug sim/29595] RISC-V simulator cannot run multiply instructions (but can run " research_trasio at irq dot a4lg.com
2022-09-22 4:50 ` research_trasio at irq dot a4lg.com
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2022-10-11 11:47 ` aburgess at redhat dot com
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